CN109020539A - Alkali-activated carbonatite fly-ash slag piezoelectric patches and preparation method thereof - Google Patents
Alkali-activated carbonatite fly-ash slag piezoelectric patches and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of alkali-activated carbonatite fly-ash slag piezoelectric patches and preparation method thereof.The preparation method of the piezoelectric patches is the following steps are included: sequentially add stirrer for mixing stirring for flyash, slag, alkali-activator, PZT suspension, by in the material injection grinding tool after mixing, the alkali-activated carbonatite fly-ash slag piezoelectric patches is obtained by compacting, maintenance, polishing, polarizer.Piezoelectric patches of the present invention is not necessarily to that cheap, environmentally protective piezoelectric patches can be made by high temperature sintering.Traditional ceramics piezoelectric patches complex manufacturing technology is solved, problem at high cost reduces the pollution to environment.
Description
Technical field
The present invention relates to ground polymers technologies, technical field of piezoelectricity, and in particular to alkali-activated carbonatite fly-ash slag piezoelectric patches and its
Preparation method.
Background technique
Skyscraper, road, bridge in contemporary civil engineering etc. are all up to century-old service life by having, but
Exposing to the weather drenches with rain etc. and can inevitably have damage under the influence of external environments and emergency case such as earthquake typhoon natural calamity, damages
Wound will lead to the unexpected avalanche of structure and cause the injures and deaths of personnel and the loss of property when reaching a certain level, it is therefore desirable to right
These large scale civil engineerings have one good " health evaluating " namely " damage check ".The pressure of presently used damage check
Electric piece is piezoelectric ceramics piece.This piezoelectric patches is anti-by high temperature sintering, solid phase oxides such as zirconium oxide, lead oxide, titanium oxide
Should after form polycrystal, and the ferroelectric ceramics piezoelectric patches of piezoelectric effect is made it have by high direct voltage polarization process.But it prepares
The cost of material that the method for this piezoelectric patches uses is higher；In addition, also needed in preparation process through high temperature sintering, energy consumption it is larger and
It is easy to cause environmental pollution.
Summary of the invention
The embodiment of the present invention provides a kind of alkali-activated carbonatite fly-ash slag piezoelectric patches and preparation method thereof, can reduce piezoelectric patches
Production cost and reduce environmental pollution.
The embodiment of the present invention provides a kind of preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches, comprising:
It is stirred after the ratio that flyash and slag are 7:3 in mass ratio is mixed, grey body mixture is obtained, successively in grey body
Alkali-activator and PZT suspension are added in mixture and stirs evenly, obtains the first piezoelectric compound；
After successively carrying out mold molding, demoulding and maintenance processing to the first piezoelectric compound, the second of laminated structure is obtained
Piezoelectric compound；
After being surface-treated to second piezoelectric compound, conductive silver paste is coated uniformly on second mixture
The top and bottom of laminated structure, and the second mixture is placed in dimethicone polarizes after the drying, obtain alkali-activated carbonatite powder
Fly ash-slag piezoelectric patches.
Further, alkali-activator and PZT suspension are added in grey body mixture and stirs evenly, obtains the first piezoelectricity
Mixture, specifically:
Alkali-activator is added in grey body mixture, 4min is mixed, is eventually adding PZT suspension and 3min is mixed
Obtain the first piezoelectric compound.
Further, mold molding successively is carried out to the first mixture, demoulding and maintenance are handled, obtain the of laminated structure
Two piezoelectric compounds, specifically:
First piezoelectric compound is injected into mold, is placed on temperature after suppressing 30min with press machine with 30MPa pressure
It is 20 DEG C, conserves in the environment of humidity 95% and demould afterwards for 24 hours, continue to conserve in the environment 3 days after demoulding, laminated structure is made
The second piezoelectric compound.
Further, the second piezoelectric compound is surface-treated, specifically:
The surface of the second piezoelectric compound is polishing to 5000 mesh from 1000 mesh by sander, then is pushed up with polishing cloth
Face and bottom surface are polished.
Further, conductive silver paste is coated uniformly on to the top and bottom of the second mixture laminated structure, and
The second mixture is placed in dimethicone after drying and is polarized, alkali-activated carbonatite fly-ash slag piezoelectric patches is obtained, specifically:
The low-temperature superconducting silver paste that uniform application temperature is 90 DEG C~100 DEG C in the top and bottom of the second piezoelectric compound,
It is put into dimeticone after drying, is 4KV/mm in field strength, polarize 20min under the polarization environment that temperature is 40 DEG C, and the alkali is made
Excite fly-ash slag piezoelectric patches.
Further, alkali-activator stirs 10min after being mixed by water, waterglass, sodium hydroxide by 100:2:4, then stands
It is obtained after for 24 hours.
Further, the mass ratio of alkali-activator and grey body mixture is 0.35:1.
Further, PZT suspension is made by following steps:
PbO, ZrO2, TiO2 are added water mixed by the ratio for being 1:0.52:0.48:3 in the molal weight of Pd, Zr, Ti, O atom
It closes, 12h in air is placed after grinding 20min with wet process ball, obtain the first PZT powder；
First PZT powder is placed in 120 DEG C of baking oven dry 6h, then ball material mass ratio is 20:1, revolution turns
Speed is 250r/min, revolution and the speed ratio of rotation are grinding 60h in the planetary ball mill of 4:1, and the 2nd PZT powder is made.
After the 2nd PZT powder is mixed with concentration for 0.4% Triammonium citrate solution, then carried out in ultra sonic bath
Decentralized processing obtains the PZT suspension.
Further, in PZT powder suspension the grain diameter of PZT between 1~5 micron.
Correspondingly, the present invention also provides a kind of piezoelectric patches, the piezoelectric patches is that a kind of alkali as provided by the present embodiment swashs
The preparation method preparation of hair powder fly ash-slag piezoelectric patches.
The implementation of the embodiments of the present invention has the following beneficial effects:
The PZT of high dielectric number is added in the alkali-activated carbonatite fly-ash slag gel rubber material of low dielectric number by the embodiment of the present invention
To which a kind of alkali-activated carbonatite fly-ash slag piezoelectric patches be made, the low in raw material price that this piezoelectric patches uses effectively reduces piezoelectricity
The production cost of piece, and the recycling to slag is realized, protect environment；Furthermore preparation process is not necessarily to through high temperature sintering,
Energy consumption is reduced, is reduced environmental pollution.
Detailed description of the invention
Fig. 1 is a kind of process signal of the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches provided in an embodiment of the present invention
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is a kind of stream of the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches provided in an embodiment of the present invention referring to Fig. 1
Journey schematic diagram, as shown in Figure 1, a kind of preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches provided in an embodiment of the present invention includes
Step:
S101, be in mass ratio by flyash and slag 7:3 ratio mixing after stir, obtain grey body mixture, successively
Alkali-activator and PZT suspension are added in the grey body mixture and stirs evenly, obtains the first piezoelectric compound.
S102, after successively carrying out mold molding, demoulding and maintenance processing to first piezoelectric compound, sheet knot is obtained
Second piezoelectric compound of structure.
S103, after being surface-treated to second piezoelectric compound, conductive silver paste is coated uniformly on described second
The top and bottom of mixture laminated structure, and second mixture is placed in dimethicone polarizes after the drying, it obtains
Obtain alkali-activated carbonatite fly-ash slag piezoelectric patches.
Further, alkali-activator and PZT suspension are added in grey body mixture and stirs evenly, obtains the first piezoelectricity
Mixture, specifically:
Alkali-activator is added in grey body mixture, 4min is mixed, is eventually adding PZT suspension and 3min is mixed
Obtain the first piezoelectric compound.
Further, mold molding successively is carried out to the first mixture, demoulding and maintenance are handled, obtain the of laminated structure
Two piezoelectric compounds, specifically:
First piezoelectric compound is injected into mold, is placed on temperature after suppressing 30min with press machine with 30MPa pressure
It is 20 DEG C, conserves in the environment of humidity 95% and demould afterwards for 24 hours, continue to conserve in the environment 3 days after demoulding, laminated structure is made
The second piezoelectric compound.
Further, the second piezoelectric compound is surface-treated, specifically:
The surface of the second piezoelectric compound is polishing to 5000 mesh from 1000 mesh by sander, then is pushed up with polishing cloth
Face and bottom surface are polished.
Further, conductive silver paste is coated uniformly on to the top and bottom of the second mixture laminated structure, and
The second mixture is placed in dimethicone after drying and is polarized, alkali-activated carbonatite fly-ash slag piezoelectric patches is obtained, specifically:
The low-temperature superconducting silver paste that uniform application temperature is 90 DEG C~100 DEG C in the top and bottom of the second piezoelectric compound,
It is put into dimeticone after drying, is 4KV/mm in field strength, polarize 20min under the polarization environment that temperature is 40 DEG C, and the alkali is made
Excite fly-ash slag piezoelectric patches.
Further, alkali-activator stirs 10min after being mixed by water, waterglass, sodium hydroxide by 100:2:4, then stands
It is obtained after for 24 hours.
Further, the mass ratio of alkali-activator and grey body mixture is 0.35:1.
Further, PZT suspension is made by following steps:
PbO, ZrO2, TiO2 are added water mixed by the ratio for being 1:0.52:0.48:3 in the molal weight of Pd, Zr, Ti, O atom
It closes, 12h in air is placed after grinding 20min with wet process ball, obtain the first PZT powder；
First PZT powder is placed in 120 DEG C of baking oven dry 6h, then ball material mass ratio is 20:1, revolution turns
Speed is 250r/min, revolution and the speed ratio of rotation are grinding 60h in the planetary ball mill of 4:1, and the 2nd PZT powder is made.
After the 2nd PZT powder is mixed with concentration for 0.4% Triammonium citrate solution, then carried out in ultra sonic bath
Decentralized processing obtains the PZT suspension.
Further, in PZT powder suspension the grain diameter of PZT between 1~5 micron.
The process of preparation method in order to better illustrate the present invention is below specifically described method of the invention:
Weigh 210g flyash, 90g slag grey body, the dry mixing in net slurry blender after flyash and slag are mixed
2min is sufficiently mixed grey body.
105g alkali-activator is weighed, alkali-activator is added in blender and stirs 4min together with flyash and slag,
Described in alkali-activator mixed by water, waterglass, sodium hydroxide by 100:2:4 after stir 10min, then after standing for 24 hours it is obtained.
PZT suspension is added in blender and stirs 3min together with the flyash and slag being added after alkali-activator, is obtained
The first piezoelectric compound is obtained, wherein PZT suspension is made by following steps: being 1 by the molal weight of Pd, Zr, Ti, O atom:
PbO, ZrO2, TiO2 are added water to mix by the ratio of 0.52:0.48:3, place 12h in air after grinding 20min with wet process ball,
Obtain the first PZT powder；
First PZT powder is placed in 120 DEG C of baking oven dry 6h, then ball material mass ratio is 20:1, revolution turns
Speed is 250r/min, revolution and the speed ratio of rotation are grinding 60h in the planetary ball mill of 4:1, and the 2nd PZT powder is made；
The 2nd PZT powder of 200g is weighed, taking concentration is 0.4% Triammonium citrate solution, by the 2nd PZT powder and lemon
Decentralized processing is carried out in ultra sonic bath after sour three ammonium salt solutions mixing, time 0.5h obtains PZT suspension, wherein PZT suspension
The diameter of middle PZT is 1~5 micron.
It is injected into the first piezoelectric compound in mold, is persistently applied with first piezoelectric compound of the press machine into mold
Add the pressure of 30MPa, duration 30min.
It is 20 DEG C that first piezoelectric compound of compression moulding, which is placed on temperature, after conserving for 24 hours in the environment of humidity 95%
Demoulding, continues to conserve in the environment 3 days after demoulding, and the second piezoelectric compound of laminated structure is made.
The surface of the second piezoelectric compound is polishing to 5000 mesh from 1000 mesh with sander, it then will thereon with polishing cloth
Lower two sides is polished, until smooth.
Low-temperature superconducting silver paste is uniformly coated with to the upper and lower surface of the second piezoelectric compound after a polish, is then placed in temperature
To be dry in 120 DEG C of baking ovens, the second piezoelectric compound after drying is then put into dimeticone, is in field strength by drying
4KV/mm, temperature are the 20min that polarizes under 40 DEG C of polarization environment, and the alkali-activated carbonatite fly-ash slag piezoelectric patches is made.
The PZT of high dielectric number is added in the alkali-activated carbonatite fly-ash slag gel rubber material of low dielectric number by the embodiment of the present invention
To which a kind of alkali-activated carbonatite fly-ash slag piezoelectric patches be made, the low in raw material price that this piezoelectric patches uses effectively reduces piezoelectricity
The production cost of piece, and the recycling to slag is realized, protect environment；Furthermore preparation process is not necessarily to through high temperature sintering,
Energy consumption is reduced, is reduced environmental pollution.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches characterized by comprising
It is stirred after the ratio that flyash and slag are 7:3 in mass ratio is mixed, grey body mixture is obtained, successively in the grey body
Alkali-activator and PZT suspension are added in mixture and stirs evenly, obtains the first piezoelectric compound；
After successively carrying out mold molding, demoulding and maintenance processing to first piezoelectric compound, the second of laminated structure is obtained
Piezoelectric compound；
After being surface-treated to second piezoelectric compound, conductive silver paste is coated uniformly on the second mixture sheet
The top and bottom of structure, and second mixture is placed in dimethicone polarizes after the drying, obtain alkali-activated carbonatite powder
Fly ash-slag piezoelectric patches.
2. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as described in claim 1, which is characterized in that described described
Alkali-activator and PZT suspension are added in grey body mixture and stirs evenly, obtains the first piezoelectric compound, specifically:
Alkali-activator is added in the grey body mixture, 4mi n is mixed, is eventually adding PZT suspension and 3mi is mixed
N obtains the first piezoelectric compound.
3. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as claimed in claim 2, which is characterized in that successively to described
First mixture carries out mold molding, demoulding and maintenance processing, obtains the second piezoelectric compound of laminated structure, specifically:
First piezoelectric compound is injected into mold, is to be placed on temperature after 30MPa pressure compacting 30mi n with press machine
It 20 DEG C, conserves in the environment of humidity 95% and demoulds afterwards for 24 hours, continue to conserve in the environment 3 days after demoulding, laminated structure is made
Second piezoelectric compound.
4. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as claimed in claim 3, which is characterized in that described second
Piezoelectric compound is surface-treated, specifically:
The surface of the second piezoelectric compound is polishing to 5000 mesh from 1000 mesh by sander, then with polishing cloth by its top surface and
Bottom surface is polished.
5. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as claimed in claim 4, which is characterized in that it is described will be conductive
Silver paste is coated uniformly on the top and bottom of the second mixture laminated structure, and after the drying sets second mixture
It polarizes in dimethicone, obtains alkali-activated carbonatite fly-ash slag piezoelectric patches, specifically:
The low-temperature superconducting silver paste that uniform application temperature is 90 DEG C~100 DEG C in the top and bottom of the second piezoelectric compound, drying
After be put into dimeticone, be 4KV/mm in field strength, temperature is the 20mi n that polarizes under 40 DEG C of polarization environment, and the alkali-activated carbonatite is made
Fly-ash slag piezoelectric patches.
6. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as described in any one in claim 1-5, which is characterized in that institute
Stirring 10mi n after alkali-activator is mixed by water, waterglass, sodium hydroxide by 100:2:4 is stated, then is stood rear for 24 hours obtained.
7. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as claimed in claims 1-5, which is characterized in that the alkali swashs
The mass ratio for sending out agent and the grey body mixture is 0.35:1.
8. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as claimed in claims 1-5, which is characterized in that the PZT
Suspension following steps are made:
Water is added to mix PbO, ZrO2, T iO2 in the ratio that the molal weight of Pd, Zr, T i, O atom is 1:0.52:0.48:3,
12h in air is placed after grinding 20mi n with wet process ball, obtains the first PZT powder；
The first PZT powder is placed in 120 DEG C of baking oven dry 6h, then ball material mass ratio is 20:1, revolution turns
Speed is 250r/mi n, revolution and the speed ratio of rotation are grinding 60h in the planetary ball mill of 4:1, and the 2nd PZT powder is made；
After the 2nd PZT powder is mixed with concentration for 0.4% Triammonium citrate solution, then dispersed in ultra sonic bath
Processing, obtains the PZT suspension.
9. the preparation method of alkali-activated carbonatite fly-ash slag piezoelectric patches as claimed in claims 1-5, which is characterized in that the PZT
The grain diameter of PZT is between 1-5 microns in suspension.
10. a kind of piezoelectric patches, which is characterized in that piezoelectric patches alkali as described in any one of claim 1-9 claim swashs
The preparation method of hair powder fly ash-slag piezoelectric patches is made.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436834A (en) * | 2019-07-17 | 2019-11-12 | 广州大学 | A kind of piezo-electricity composite material and piezoelectric patches prepared therefrom |
| CN112652782A (en) * | 2020-12-09 | 2021-04-13 | 广东至道先进土木工程材料技术研究有限公司 | Environment-friendly geopolymer battery and preparation method thereof |
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| CN108358519A (en) * | 2018-01-31 | 2018-08-03 | 广州大学 | A kind of alkali-activated carbonatite fly-ash slag conducting concrete and preparation method thereof having pressure-sensitive character |
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| CN110436834A (en) * | 2019-07-17 | 2019-11-12 | 广州大学 | A kind of piezo-electricity composite material and piezoelectric patches prepared therefrom |
| CN110436834B (en) * | 2019-07-17 | 2021-09-14 | 广州大学 | Piezoelectric composite material and piezoelectric sheet prepared from same |
| CN112652782A (en) * | 2020-12-09 | 2021-04-13 | 广东至道先进土木工程材料技术研究有限公司 | Environment-friendly geopolymer battery and preparation method thereof |
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